Improved stone-drilling machine



I llllll lill IIII III MPETERS, PmmuTHOGR-APHER. WASHINGTON. D. C.

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C.' W. HERMANGE, OF SOHUYLERVILLE, ASSIGNOR TO W. P. OSTRANDER, A. H. PEAB- SALL, B. Gr. SHULTS, AND A. L. FLNNE, ALL OF THE STATE OF NEW YORK.

Letters Patent No. 84,188,

dated November 17, 1868."l

The Schedule refen'ed to in these Letters Patzent and making part of the same.

'To all whom fit lmer/y concer/n Y vBe itknown that I, G. W. HERMANGE, of Schuyler-.- ville, in the county of Saratoga, and in the State of New York, have invented certain new and useful Improvements in Stone-Drilling Machines; and do hereby declare that the following is a full, clear, and exact description thereof', reference being had to the accompanying drawings, and to the letters of-reference marked thereon. My invention relates to that class of machines used for drilling stone, marble, 85o., and consists principally in thel arrangement of the devices for raising the drill up, andA also in the mode of compressing the spring which brces the drill down into the stone, enabling the operator toregulate the force of the stroke as may be In order to enable others skilled in the art to which my invention appertains,.to make and use the same, I

'will now proceed to describe its construction and oper- -duced dimensions.

A represents the bottom or bed-plate, near one end of which are two standards, B B.

On top of the said standards a frame, C, is placed, which frame is hinged to the rear edge of the standards, and by that means may be placed at any .ingle desired. From a suitable point on the rear sideof the framea bent bar, D, extends backward and downward, g

which bar is held at any point desired in or between stationary bars E, by means of a pin, bolt, screw, .or any other suitable manner. The diill being placed in the frame C, and parallel with its sides,`it will be seen that, by changing the 4position of the 'said frame, and securing it by means of the bent bar D, the drill will operate at any angle in the stone desired.

The sides of the frame C are slotted lengthways, as shown in fig. 2, and between the sides is placed a crosshead, F, which is provided with lugs a a, which project through the said slots, and maintain the cross-head always in the same position while it is being worked up and down. The manner of wrking the cross-head up and down will be hereinafter described.

Through the centre of the cross-head F is a hole, and thecross-head is provided with a stationaryY and a mov.- able collar, through which the drill-rod G is passed. There is also on the upper side of the cross-head F, a device for turning the drill when the machine is in operation. This device, as shown in the drawings, is not new, having already beeurpatented by me in January, 1868.

On top of the frame Gis placed a hollow tube, H the sides of which are slotted and notched, as shownir lfig. 2.

This tube is held by braces, I I, or in any other manner desired. y

The drillshaft G passes up through said tube, and the spiral spring J, which is generally used for forcing the drill downwards, is placed around the drill-shaftin the tube H. The lower end of the spring J rests ona stationary collar on the drill-shaft, ynst abov'e the crosshead- F, and its upper end presses against a movable collar, b, placed around the drill-shaft, inside of the tube.

The movable collar b is provided withpins e e, which proj ect through the slots in the tube H.

It will now be readily seen that, by pressing the collar b downwards, and placing the pins e ein the notches in the tube, the spring J will be compressed, and, oonsequently, the force of the drill increased. y The tube pins e e may be placed, the force of the drill can, of course, be regulated to' suit any kind of stone or work desired.

The manner. of raising the cross-head F with the drill-shaft is as follows:

The sides of the cross-head F are provided with pins frame C, and have at their outer ends friction-rollers d d.

At a suitable point in the frame C is placed a shaft, K, at each end of which is secured a wheel, L, which wheels extend along the sides of the frame O. The in'- 'ner side of the Wheels L L is provided with stationary semicircular flanges or cams, t fi, which catch under the friction-rollers l d, on the cross-head F, raising the same up until the wheels have been turnedsufficiently far to release the friction-rollers from the said cam, when the spring J forces the cross-head down, ready to be raised again by the next cam. It will, however, be obthat they catch the friction-rollers near the outer edge or periphery of the wheels, and drop them near the axle.

By this arrangement a great deal more power is obltained from the same spring than would be obtained by the usual arrangement of the cams or Hanges, as the cross-head is dropped at the very moment when the spring is compressed the most,-while, in other machines, the spring always expands somewhat beforethe crosshead or drill-shaft is released from the cams.

This mode of arranging' thecams or flanges is not coniined merely to rockldrilling machines, but may be used on any machine where a certain part should be regularly raised up and forced down.

.Having thus fully described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

purpose of operating a machine, by raising a certain part thereof and letting it' fall again when said flanges H being provided with a series of notches in which the c c, which project through the slots in the sides of the y served, that the flanges or cams t fi are so arranged 1. The arrangement of one or more flanges or cams,- or their equivalents, on the side of a wheel, for the or earns operate from the periphery to the axle of the J, thereby regulatingl the force of the drill operated by Wheel, that is, commence the raising ntnr nem' the pursaid spring, snbsfnntnlly us shown nnd described.

iphery, und letting, go nein' the axle, substantially :is In testimony flint l rlnini tlnl tnugong, I linie hereherein set forth. unto sut; my lmnd, this l'th dny nl' Ovtober, ISGS. 2. The tube H, having its sides slotted und notched Vitnessess Q fl HERMA-NUE as described, in combination with the nmmble eollnr I1, LBOVQLD HVERT and pins a e, for the purpose of compressing; the spring A, N ARK 

